Streaming in Germany, advice?

Someone I know streamed a movie through Stremio and was contacted by a law firm demanding €1000 for copyright infringement, however they werent using a VPN. I have heard that using a non-eu vpn (like TorGuard) and watching movies/shows over a debrid service instead of P2P is safe in Germany and you wont get caught. Is this true? If not, how would someone do it without getting caught?

Edit: spelling